One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,4,5)(3,7,8,6)(10,11)(15,17)(16,18)(22,23)(25,26,31,33)(27,35,37,32)(28,36,39,34)(29,40,38,30)(2,5)(6,7)(9,10,14,11)(12,15,20,17)(13,16,21,18)(19,22,24,23)(25,27,31,37)(26,32,33,35)(28,38,39,29)(30,36,40,34)(1,2)(3,6)(4,5)(7,8)(13,21)(16,18)(19,24)(22,23)(26,33)(30,40)(32,35)(34,36) involution — undirected(1,2)(3,6)(4,5)(7,8)(9,11,14,10)(12,15,20,17)(13,18,21,16)(19,22,24,23)(25,28,31,39)(26,34,33,36)(27,29,37,38)(30,32,40,35)(1,3)(2,6)(4,8)(5,7)(9,12,14,20)(10,15,11,17)(13,19,21,24)(16,22,18,23)(25,29)(26,30)(27,28)(31,38)(32,36)(33,40)(34,35)(37,39)(9,13)(10,16)(11,18)(12,19)(14,21)(15,22)(17,23)(20,24)(25,30)(26,29)(27,36)(28,32)(31,40)(33,38)(34,37)(35,39) involution — undirectedA Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.